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An interesting fuel problem.
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Ted2
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PostPosted: Tue Oct 01, 2019 4:43 am    Post subject: An interesting fuel problem. Reply with quote

OK gang, I'm looking for suggestions.

I've had this problem occur three times this summer around the 100 mile mark into a trip.

The car acts like it is running out of gas when the tank is still half full and the level is above the top of the intake screen. When I removed the gas cap to check the level and put it back on the car runs fine.

What could be the problem?
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finster
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PostPosted: Tue Oct 01, 2019 5:50 am    Post subject: Re: An interesting fuel problem. Reply with quote

blocked vent in the cap? when you open the cap you let air in so the 'problem' goes away until next time
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type241
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PostPosted: Tue Oct 01, 2019 7:53 am    Post subject: Re: An interesting fuel problem. Reply with quote

https://www.thesamba.com/vw/classifieds/detail.php?id=2305053
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Ovally
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PostPosted: Tue Oct 01, 2019 10:39 am    Post subject: Re: An interesting fuel problem. Reply with quote

Ted2 wrote:
OK gang, I'm looking for suggestions.

I've had this problem occur three times this summer around the 100 mile mark into a trip.

The car acts like it is running out of gas when the tank is still half full and the level is above the top of the intake screen. When I removed the gas cap to check the level and put it back on the car runs fine.

What could be the problem?


Like "finster" said, could be blocked vent in the cap.

Here is a vented stock cap : gas fumes go in (see red arrows) and come out through the openings along the edge (see green arrow).

Regards.


Image may have been reduced in size. Click image to view fullscreen.

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Ted2
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PostPosted: Wed Oct 02, 2019 2:18 am    Post subject: Re: An interesting fuel problem. Reply with quote

Thanks for the photograph. I was wondering how the cap was designed to vent.
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